Search results

  1. R

    Calculus 2 interval of convergence -- checking end points

    I tried to go back and edit the post but was unable to. This link should work for the problem thanks for the heads up.
  2. R

    Arc Length. Simplify expression

    Yes, it was obvious when you factor it out. It just took me a bit to realize that.
  3. R

    Arc Length. Simplify expression

    Thanks for the input. I figured out my issue.
  4. R

    Arc Length. Simplify expression

    Thanks for the quick reply but I'm not able to follow your work. sqrt (1/4e^2x + 1/4e^-2x + 1/2) = 1/2 (e^-x + e^x) I'm not sure how the above math is done. Thanks
  5. R

    Arc Length. Simplify expression

    Homework Statement I'm trying to find Arc Length of F(x) = (e^x + e^-x)/2 0< x < 2] Homework Equations L = integrate sqrt ( 1 + (dy/dx))^2) The Attempt at a Solution (dy/dx)^2 + 1 = 1/4e^2x + 1/4e^-2x + 1/2] I don't know how to take the square root of the above function so I can be...
  6. R

    Help with problem, comparison of energy released

    Using the equation Force = Pressure x Area. How much energy would be released from an iron tube 48” long with an inside diameter of 2.1” and outside diameter of 3”. Wall thickness would be .9”. With 8500psi inside. Maybe I calculated it wrong but I got 1.1 million pounds of force released. Once...